diff --git a/.github/workflows/abicheck.yml b/.github/workflows/abicheck.yml
index 4e14353d..dd971ab2 100644
--- a/.github/workflows/abicheck.yml
+++ b/.github/workflows/abicheck.yml
@@ -37,7 +37,7 @@ jobs:
           echo base abi : $base_abi
           ./base$prefix/bin/irssi --version
           echo "::set-output name=base_abi::$base_abi"
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: base.inst
           path: base
@@ -70,8 +70,9 @@ jobs:
           merge_abi=$(getabidef merge$prefix)
           echo merge abi : $merge_abi
           ./merge$prefix/bin/irssi --version
-          echo "::set-output name=merge_abi::$merge_abi"
       - uses: actions/upload-artifact@v2
+          echo "::set-output name=merge_abi::$merge_abi"
+      - uses: actions/upload-artifact@v4
         with:
           name: merge.inst
           path: merge
@@ -89,12 +90,12 @@ jobs:
         run: |
           sudo apt install abigail-tools
       - name: fetch base build
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: base.inst
           path: base
       - name: fetch merge build
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: merge.inst
           path: merge
@@ -103,7 +104,7 @@ jobs:
           abipkgdiff -l base merge >abipkgdiff.out && diff_ret=0 || diff_ret=$?
           echo "diff_ret=$diff_ret" >> $GITHUB_ENV
           cat abipkgdiff.out
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           path: abipkgdiff.out
       - run: |
diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index e134b4d6..ff43cf1a 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -26,7 +26,7 @@ jobs:
           # make dist
           ./autogen.sh $build_options_configure
           make dist
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           path: irssi-*.tar.gz
           retention-days: 1
@@ -56,7 +56,7 @@ jobs:
             flags: meson-latest FAILURE-OK
     steps:
       - name: fetch dist
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
       - name: set PATH
         run: |
           echo "$HOME/.local/bin" >> $GITHUB_PATH